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Two lenses of power +3.5 D and - 2.5 D a...

Two lenses of power +3.5 D and - 2.5 D are placed in contact. The lens in the combination set up acts like a

A

Concave lens

B

Convex lens

C

Glass slab

D

Concave mirror

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The correct Answer is:
B
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ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE - CHOICE QUESTIONS)
  1. A student has obtained a point image of a distant object using a conve...

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  2. In the incomplete ray diagram given below, the object AB would be at t...

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  3. Two lenses of power +3.5 D and - 2.5 D are placed in contact. The lens...

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  4. To obtain a diminished image of an object from a concave mirror, posit...

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  5. Identify the emergent ray in the given figure

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  6. An object is kept at the centre of curvature of a concave mirror. The ...

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  7. Which of the following can make parallel beam of light when light from...

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  8. A full length image of a distant tall building can definitely be seen ...

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  9. In torches, search lights and headlights of vehicles the bulb is place...

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  10. The laws of reflection hold good for

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  11. A child is standing in front of a magic mirror. She finds the image of...

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  12. The speed of light in vacuum is

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  13. Virtual images formed by a convex mirror are always ………..

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  14. Which of these can be used to obtain a real image having the same size...

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  15. The distant object method can be used to find the focal length of whic...

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  16. A light ray is incident on a concave mirror which passes through the c...

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  17. When a biconvex lens made of glass is immersed in a liquid which is op...

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  18. The power of a spherical lens is given by :

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  19. When a concave lens made of glass is kept in a liquid which has greate...

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  20. An object is kept 15 cm in front of a concave lens of focal length 20 ...

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